Home / 99,532.10-137,356.90-54,211.80

Finding the Fourth Proportional to 99,532.10, 137,356.90 and 54,211.80

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Solution

The fourth proportional to 99,532.10, 137,356.90 and 54,211.80 is: 74,813.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,532.10 : 137,356.90 = 54,211.80 : x
  2. Step 2: Convert to fraction form
    99,532.10/137,356.90 = 54,211.80/x
  3. Step 3: Cross multiply
    99,532.10x = 137,356.90 × 54,211.80
  4. Step 4: Simplify right side
    99,532.10x = 7,446,364,791.42
  5. Step 5: Solve for x
    x = 7,446,364,791.42/99,532.10
  6. Step 6: Final answer
    x = 74,813.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.